package com.itheima.controller;

import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/user")
public class UserController {

    //获得当前用户的用户名
    @RequestMapping("/getUsername.do")
    public Result gerUsername(){
        //当spring security完成认证后，会将当前用户信息保存到框架提供的上下文对象
        User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        System.out.println((user));
        if (user!=null){
            String username = user.getUsername();
            return new Result(true, MessageConstant.GET_USERNAME_SUCCESS,username);
        }else{
            return new Result(true, MessageConstant.GET_USERNAME_FAIL);
        }
    }
}
